#------------------------------------------------------------------------------
#$Date: 2019-11-24 09:29:40 +0100 (dom 24 de nov de 2019) $
#$Revision: 237638 $
#$URL: svn://www.crystallography.net/cod/cif/7/23/73/7237377.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_7237377
loop_
_publ_author_name
'Paliwoda, Damian'
'Szafrański, Marek'
'Hanfland, Michael'
'Katrusiak, Andrzej'
_publ_section_title
;
 A giant 2-dimensional dielectric response in a compressed hydrogen-bonded
 hybrid organic--inorganic salt
;
_journal_issue                   28
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              7689
_journal_paper_doi               10.1039/C8TC02464B
_journal_volume                  6
_journal_year                    2018
_chemical_formula_moiety         'C4 H5 N2 Au Cl4'
_chemical_formula_sum            'C4 H5 Au Cl4 N2'
_chemical_formula_weight         419.87
_chemical_name_common            'pyrazinium tetrachloroaurate'
_chemical_name_systematic
; 
pyrazinium tetrachloroaurate 
;
_space_group_IT_number           138
_space_group_name_Hall           '-P 4ac 2ac'
_space_group_name_H-M_alt        'P 42/n c m :2'
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-P 4ac 2ac'
_symmetry_space_group_name_H-M   'P 42/n c m :2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-04-07 deposited with the CCDC.
2018-06-28 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.91480(10)
_cell_length_b                   7.91480(10)
_cell_length_c                   15.873(9)
_cell_measurement_reflns_used    1606
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      37.28
_cell_measurement_theta_min      3.86
_cell_volume                     994.3(6)
_computing_cell_refinement       'CrysAlisRED (Oxford Diffraction, 2004)'
_computing_data_collection       'CrysAlisCCD (Oxford Diffraction, 2004)'
_computing_data_reduction        'CrysAlisRED (Oxford Diffraction, 2004)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 1990)'
_computing_publication_material  'SHELXL--97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL--97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS--97 (Sheldrick, 1997)'
_diffrn_ambient_environment      'diamond-anvil cell'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.230
_diffrn_measured_fraction_theta_max 0.230
_diffrn_measurement_device_type  Serial
_diffrn_measurement_method       ω/2θ
_diffrn_radiation_monochromator  Si(111)
_diffrn_radiation_source         synchrotron
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.41438
_diffrn_reflns_av_R_equivalents  0.0301
_diffrn_reflns_av_sigmaI/netI    0.0317
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            1606
_diffrn_reflns_theta_full        37.28
_diffrn_reflns_theta_max         37.28
_diffrn_reflns_theta_min         3.86
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    15.810
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    2.805
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.05
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.717
_refine_diff_density_min         -0.680
_refine_diff_density_rms         0.126
_refine_ls_extinction_coef       0.0033(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.157
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     34
_refine_ls_number_reflns         322
_refine_ls_number_restraints     51
_refine_ls_restrained_S_all      1.085
_refine_ls_R_factor_all          0.0729
_refine_ls_R_factor_gt           0.0435
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[σ²(Fo²)+(0.0171P)²+9.2275P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0758
_refine_ls_wR_factor_ref         0.0892
_reflns_number_gt                206
_reflns_number_total             322
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8tc02464b2.cif
_cod_data_source_block           pyrazinium_tetrachloroaurate_ambient_pressure
_cod_original_cell_volume        994.3(5)
_cod_original_sg_symbol_H-M      'P 42/n c m'
_cod_database_code               7237377
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x+1/2, -y+1/2, z'
'-y+1/2, x, z+1/2'
'y, -x+1/2, z+1/2'
'-x, y+1/2, -z+1/2'
'x+1/2, -y, -z+1/2'
'y+1/2, x+1/2, -z'
'-y, -x, -z'
'-x, -y, -z'
'x-1/2, y-1/2, -z'
'y-1/2, -x, -z-1/2'
'-y, x-1/2, -z-1/2'
'x, -y-1/2, z-1/2'
'-x-1/2, y, z-1/2'
'-y-1/2, -x-1/2, z'
'y, x, z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
Au1 Au 0.2500 0.2500 0.2386(2) 0.0416(17) Uani 1 4 d SU
Cl3 Cl 0.2500 0.2500 0.3820(18) 0.058(3) Uani 1 4 d SU
Cl4 Cl 0.2500 0.2500 0.0966(18) 0.058(3) Uani 1 4 d SU
N1 N 0.8709(14) 0.1291(14) 0.0000 0.055(4) Uani 1 2 d SDU
H1A H 0.9477 0.0523 0.0000 0.066 Uiso 0.50 2 calc SPR
C1 C 0.8116(11) 0.1868(11) 0.0730(8) 0.058(4) Uani 1 1 d DU
H1 H 0.8519 0.1433 0.1236 0.070 Uiso 1 1 calc R
Cl1 Cl 0.4528(4) 0.0472(4) 0.2360(8) 0.067(3) Uani 1 2 d SU
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Cl Cl 0.1484 0.1585 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Au Au -2.0133 8.8022 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
Cl4 Au1 Cl3 180.000(2) . .
Cl4 Au1 Cl1 89.0(3) . 2
Cl3 Au1 Cl1 91.0(3) . 2
Cl4 Au1 Cl1 89.0(3) . .
Cl3 Au1 Cl1 91.0(3) . .
Cl1 Au1 Cl1 177.9(6) 2 .
C1 N1 C1 121.1(16) 8_665 .
C1 C1 N1 119.4(8) 2_655 .
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
Au1 Cl4 2.25(3) .
Au1 Cl3 2.28(3) .
Au1 Cl1 2.270(4) 2
Au1 Cl1 2.270(4) .
N1 C1 1.331(8) 8_665
N1 C1 1.331(8) .
C1 C1 1.398(9) 2_655
